Popcorn (No. 17)

Combine 1 tablespoon vegetable oil and 1/4 cup popcorn kernels in a disposable pie pan. Seal the pan in foil, making a dome shape on top. (Use 2 sheets of foil, if needed, to cover.) Grill over high heat, shaking, until the popping stops, about 8 minutes. Season with salt.

Zucchini and Tomatoes (No. 20)

Toss 2 sliced zucchini, 2 diced tomatoes, 4 smashed garlic cloves, olive oil, basil, and salt and pepper on a sheet of foil. Form a packet. Grill over high heat, 10 minutes. Top with grated Parmesan.

Upside-Down Cakes (No. 47)

For each cake, mound 1 1/2 tablespoons light brown sugar and 1 tablespoon butter on a sheet of nonstick foil. Top with a pineapple ring, a maraschino cherry and an upside-down small shortcake shell. Form a packet. Grill sugar-side down over medium-high heat, 12 minutes.